burdett



No. 622,ll4. Patented Mar. 28, i899. F. A. BURDETT.

MECHANISM FOR OPERATING VALVES.

(Application filed Dec. 1, 1897.) (No Model.) 2 Sheets-Sheet 2.

5 k I E U L WITNESSES: k r INVENTOR J BY HDittnmlr his ATTORNEY m: NunmFzvzas co. rmmauwo.v WASHKNGTON, n. z;

IUNTTE STATES PATENT Fries.

FREDERICK A. BURDETT, OF NEWV YORK, N. Y.

MECHANISM FOR OPERATING VALVES.

SPECIFICATION forming part of Letters Patent No. 622,1 14, dated March28, 1899.

Application filed December T0 ctZZ whom, it may concern.-

Be it known that I, FREDERICK A. BURDET'I, a citizen of the UnitedStates, residing at New York city, in the State of New York,'haveinvented certain new and useful Improvements in Mechanism for OperatingValves; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as willenable others skilled inthe art to which it appertains to make and use the same.

My invention has reference to improvements in and relating to valves;and the object of the invention is to provide an effective means foroperating two radiator-valves simultaneously from a point near the topof the radiator. I attain this object by the m echanism illustrated inthe accompanying drawings, in which Figure 1 is an elevation of avalve-operating mechanism constructed in accordance with my invention.Fig. 2 is a view, partly in section, on the line A B of Fig. 1. Fig. 3is an elevation of the valve cap and stem. Fig. 4 is a section of thesame on the center line C D, Fig. 5; and Fig. 5 is a plan looking fromthe top. Fig. 6 is an elevation at right angles to Fig. 3, showing thecasing which surrounds the packing. Fig. '7 is an elevation of thesupport for the vertical shaft. Fig. 8 is a planof the same. Fig. 9 isan under side View of the valve M.

In the drawings similar letters of reference denote corresponding partsthroughout the several views.

The inlet and outlet valves A A of a radiator (not shown) are providedat their tops with a plate B, which is held securely in po sition bymeans of nuts 0 on the valve-tops. The plate B is provided with a holeintermediate the valves to permit the passage of a vertical spindle orshaft D, which is screwthreadedat its lower'end and receives thereon aclevis F, having a corresponding screwthread in its lower half. From theplate 13 the shaftD extends upwardly to a point preferably near the topof the radiator, where it is guided, and finds a suitable bearing in aneye in the support 0. This support consists of the triangular plate 0,through which the shaft passes, which is held against the radiator bymeans of a bolt P, passing through a bent barQ, fitting snugly aroundthe end sec- 1,1897. Serial No. 660,419. (No model.)

tion of the radiator. The shaft is prevented from being displacedvertically by means of four jam-nuts E, provided in pairs on the sameabove and below the plate B.

The clevis F is split at its upper end, forming two lugs, and hasconnected thereto by means of pins F four cross-rods G G, which areplaced in pairs on said lugs and are free to turn thereon. The pairs ofrods G G are shaped somewhat like an X,having horizontal extensions ateach extremity, which are connected by links H and H to clevises K,rigidly secured on the valve-stems. The latter are provided in thevalves with caps M, which are peculiarly constructed, as hereinafterdescribed.

To manipulate the shaft D, a crank N or any other suitable device issecured at its upper end, and to avoid any tendency of a lateral motionon the part of the clevis F, I provide thereon an arm or projection R,which is guided on an upright S, suitably secured to the plate B.

To operate the mechanism, the crank N is turned, causing the shaft D torev0lve,whereby the clevis F and the parts connected therewith areobliged to move upward or downward, as the case may be, thus opening andclosing the valves at will.

The arrangement of the rods G G H H .and the clevises F and K is such asto transmit equal pressure to the two valve-stems and to provide forunequal resistances of the valvestems. For instance, if the friction onthe valve-stem L is considerably less than that on L then as themechanism is operated L will be drawn up more rapidly than L, thusincreasing the distance in a straight line between the points T and T,the cross-rods assuming substantially the position indicated by dottedlines in Fig. 1. With the arrangement shown this increase can be readilyobtained and the cross-rods G G H H and their connections receive anyhorizontal force which may be produced, and the pressure transmitted tothe valve-stems is always vertical, thus insuring an easy action of thevalve-stems.

In the mechanism described wrought, rolled, or sheet metal which can beworked by punches and dies has been employed, thereby reducing the costof manufacturing the same by avoiding the turning or lathework and thefinishing rendered necessary when cast metal is employed. The clevises Fand K are first cut to suitable lengths, whereupon vertical slitsdiametrically opposite each other are cut in the perimeter, which extenddownward to the part K where the screw-thread begins. On each side ofthese cuts the part-s are fiattencd out, cut, and punched by suitablepunches and dies, thus forming the lugs F and K.

The valve-stems L and L are made from a rod or bar of wrought or rolledmetal, properly annealed, of a diameter V cut to such lengths that theywill contain sufficient metal to form the head U.

The valve-cap M, forming a packing-holding device, is made from threeflat plates of sheet metal (rolled or wrought) pressed into the shape ofthe pieces \V, Y, and Z. The piece Y is first made with the part Yturned down at right angles to the surface Y The piece \V is thenput onthe part Y and the ends Y are bent over into the slots \V The packing isthen inserted in the piece \V, and the edge of the latter \V is thenturned down around it, thus holding the packing firmly in position.Moreover, I provide in the "alvecap a cylinder X, of sheet metal, whichresults in an appreciable saving of packing. The piece Z is adapted tofit under the projections Z and Z having depressions which hold theclamp Z securely in position.

\Vhile the surface depressions are considered as sufficient for allordinary circumstances, nevertheless to prevent any possibility of thepart Z from slipping from under Z the part. Z is slotted, Fig. 5, toreceive said portion Z, and when clamped into position forms a. rigidconnection.

It will be apparent to those skilled in the art that the system ofcross-rods G, G, II, and ll may be replaced by a single rod or by a pairof rods; but experience has shown that the construction above set forthis best adapted for the purpose in view, for where a single rod or pairof rods is employed there is a strong tendency for the valve-stems tobend and to wear away rapidly, due to a greater friction or pressure onone valve-stem than on the other.

It is likewise evident that various changes and modifications in theform, arrangement, and construction of divers parts of my invention maybe made without departing from the spirit and scope of the same. Hence Ido not to secure by Letters 1. In mechanism for operating tworadiator-valves simultaneously, the combination with the valves, of aplate connecting said valves, a screw-shaft passing through said plateand extending upwardly to a convenient height near the top of theradiator, a clevis screwing on said shaft split in its upper half toform two lugs, angular cross-rods pivoted in pairs on either lug andsimilarly connected by means of links to clevises on the valvestems,said rods adapted to transmit pressure from one valve-stem to the other,means for manipulating said shaft and means for preventing a lateralmovement of its clevis, substantially as specified.

2. The combination with the radiatorvalves, of a plate secured in thetops of said valves, a screw-shaft passing through said plate andthrough a guide or support 0 secured to the top of the radiator, aclevis F screwing on said shaft, cross-rods pivoted to said clevis, thestems of said valves being provided with similar clcvises suitablyconnected to the cross-rods, a crank secured to the upper end of saidshaft, said clevis F being provided with an arm or projection R guidedon an upright S secured to the supporting-plate substantially asdescribed.

3. In mechanism of the class described, the combination of tworadiator-valves, a valvecap provided in each of said valves, consistingof a disk, having its periphery bent downwardly to form a hollow body,a. metal core or cylinder adapted to be received centrally in said disk,suitable packing material arranged around said core, peripheralextensions formed at each extremity of said core and engaging thepacking, a valve-stem, a tang connecting said valve stem and cap, andsuitable means, as described, for actuating said valve-stem,substantially as described.

4. The combination with mechanism operating as described, of tworadiator-valves, a packing-holding device or casing arranged within eachof said valves and consisting of a disk having its periphery bentdownwardly to form a hollow body, a hollow cylindrical metallic bodyadapted to be received centrally in said disk, suitable packing materialarranged around said metallic body, a valvestem fitted to said diskhaving its end provided with a stud surmounted by a collar, said stembeing secured to the disk by means of clamping members embracing saidcollar and disk and bent upwardly within the latter to secure thepacking therein, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

FREDERICK A. BURDET".

\Vitnesses:

WALTER O. CoUoH, W. RALPH S UIRE.

